<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      body {
        overflow: hidden;
      }
      div:nth-of-type(3) {
        width: 200px;
        height: 200px;
        background-color: red;
      }
      div:nth-of-type(2) {
        width: 200px;
        height: 200px;
        background-color: blue;
      }
      div:nth-of-type(1) {
        float: left;
        width: 130px;
        height: 130px;
        margin-left: 35px;
        margin-top: 135px;
        border-radius: 50%;
        background-image: url(../day5/img/icon.png);
      }
    </style>
  </head>
  <body>
    <!-- 浮动实现精灵图定位 -->
    <div></div>
    <div></div>
    <div></div>
  </body>
</html>
